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/*
* pkcs7.c
*
* Copyright (C) AB Strakt
* See LICENSE for details.
*
* PKCS7 handling code, mostly thin wrappers around OpenSSL.
* See the file RATIONALE for a short explanation of why this module was written.
*
*/
#include <Python.h>
#define crypto_MODULE
#include "crypto.h"
static char crypto_PKCS7_type_is_signed_doc[] = "\n\
Check if this NID_pkcs7_signed object\n\
\n\
@return: True if the PKCS7 is of type signed\n\
";
static PyObject *
crypto_PKCS7_type_is_signed(crypto_PKCS7Obj *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":type_is_signed"))
return NULL;
if (PKCS7_type_is_signed(self->pkcs7))
return PyLong_FromLong(1L);
else
return PyLong_FromLong(0L);
}
static char crypto_PKCS7_type_is_enveloped_doc[] = "\n\
Check if this NID_pkcs7_enveloped object\n\
\n\
@returns: True if the PKCS7 is of type enveloped\n\
";
static PyObject *
crypto_PKCS7_type_is_enveloped(crypto_PKCS7Obj *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":type_is_enveloped"))
return NULL;
if (PKCS7_type_is_enveloped(self->pkcs7))
return PyLong_FromLong(1L);
else
return PyLong_FromLong(0L);
}
static char crypto_PKCS7_type_is_signedAndEnveloped_doc[] = "\n\
Check if this NID_pkcs7_signedAndEnveloped object\n\
\n\
@returns: True if the PKCS7 is of type signedAndEnveloped\n\
";
static PyObject *
crypto_PKCS7_type_is_signedAndEnveloped(crypto_PKCS7Obj *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":type_is_signedAndEnveloped"))
return NULL;
if (PKCS7_type_is_signedAndEnveloped(self->pkcs7))
return PyLong_FromLong(1L);
else
return PyLong_FromLong(0L);
}
static char crypto_PKCS7_type_is_data_doc[] = "\n\
Check if this NID_pkcs7_data object\n\
\n\
@return: True if the PKCS7 is of type data\n\
";
static PyObject *
crypto_PKCS7_type_is_data(crypto_PKCS7Obj *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":type_is_data"))
return NULL;
if (PKCS7_type_is_data(self->pkcs7))
return PyLong_FromLong(1L);
else
return PyLong_FromLong(0L);
}
static char crypto_PKCS7_get_type_name_doc[] = "\n\
Returns the type name of the PKCS7 structure\n\
\n\
@return: A string with the typename\n\
";
static PyObject *
crypto_PKCS7_get_type_name(crypto_PKCS7Obj *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":get_type_name"))
return NULL;
/*
* return a string with the typename
*/
return PyBytes_FromString(OBJ_nid2sn(OBJ_obj2nid(self->pkcs7->type)));
}
/*
* ADD_METHOD(name) expands to a correct PyMethodDef declaration
* { 'name', (PyCFunction)crypto_PKCS7_name, METH_VARARGS }
* for convenience
*/
#define ADD_METHOD(name) \
{ #name, (PyCFunction)crypto_PKCS7_##name, METH_VARARGS, crypto_PKCS7_##name##_doc }
static PyMethodDef crypto_PKCS7_methods[] =
{
ADD_METHOD(type_is_signed),
ADD_METHOD(type_is_enveloped),
ADD_METHOD(type_is_signedAndEnveloped),
ADD_METHOD(type_is_data),
ADD_METHOD(get_type_name),
{ NULL, NULL }
};
#undef ADD_METHOD
/*
* Constructor for PKCS7 objects, never called by Python code directly
*
* Arguments: pkcs7 - A "real" pkcs7 certificate object
* dealloc - Boolean value to specify whether the destructor should
* free the "real" pkcs7 object
* Returns: The newly created pkcs7 object
*/
crypto_PKCS7Obj *
crypto_PKCS7_New(PKCS7 *pkcs7, int dealloc)
{
crypto_PKCS7Obj *self;
self = PyObject_New(crypto_PKCS7Obj, &crypto_PKCS7_Type);
if (self == NULL)
return NULL;
self->pkcs7 = pkcs7;
self->dealloc = dealloc;
return self;
}
/*
* Deallocate the memory used by the PKCS7 object
*
* Arguments: self - The PKCS7 object
* Returns: None
*/
static void
crypto_PKCS7_dealloc(crypto_PKCS7Obj *self)
{
/* Sometimes we don't have to dealloc the "real" PKCS7 pointer ourselves */
if (self->dealloc)
PKCS7_free(self->pkcs7);
PyObject_Del(self);
}
PyTypeObject crypto_PKCS7_Type = {
PyOpenSSL_HEAD_INIT(&PyType_Type, 0)
"PKCS7",
sizeof(crypto_PKCS7Obj),
0,
(destructor)crypto_PKCS7_dealloc,
NULL, /* print */
NULL, /* getattr */
NULL, /* setattr */
NULL, /* compare */
NULL, /* repr */
NULL, /* as_number */
NULL, /* as_sequence */
NULL, /* as_mapping */
NULL, /* hash */
NULL, /* call */
NULL, /* str */
NULL, /* getattro */
NULL, /* setattro */
NULL, /* as_buffer */
Py_TPFLAGS_DEFAULT,
NULL, /* doc */
NULL, /* traverse */
NULL, /* clear */
NULL, /* tp_richcompare */
0, /* tp_weaklistoffset */
NULL, /* tp_iter */
NULL, /* tp_iternext */
crypto_PKCS7_methods, /* tp_methods */
};
/*
* Initialize the PKCS7 part of the crypto sub module
*
* Arguments: module - The crypto module
* Returns: None
*/
int
init_crypto_pkcs7(PyObject *module) {
if (PyType_Ready(&crypto_PKCS7_Type) < 0) {
return 0;
}
/* PyModule_AddObject steals a reference.
*/
Py_INCREF((PyObject *)&crypto_PKCS7_Type);
if (PyModule_AddObject(module, "PKCS7Type", (PyObject *)&crypto_PKCS7_Type) != 0) {
return 0;
}
return 1;
}
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